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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 16 Jan 2011 (Sunday) 17:24
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MA vs Recalibrated

 
danny819
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Jan 16, 2011 17:24 |  #1

I am just wondering what are your thoughts about front/back focusing of a lens. Would you guys play with MA or would you send it in to get it re-calibrated?


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JHutch
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Jan 16, 2011 17:51 |  #2

You might as well try MA first if your camera has it.


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dgsphoto
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Jan 16, 2011 17:53 |  #3

To me, depends on:
* Is lens under warranty (in which case I would send it in)
* Whether I see using that lens with any non-MA bodies I might have
* Is the number of lenses with a problem exceed the number of lenses supported on the MA body (would be a nice kinda problem to have though! -:))

If none of the bodies I have support MA, then of course it would have to recalibrated regardless of warranty or not.




  
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danny819
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Jan 16, 2011 17:58 as a reply to  @ dgsphoto's post |  #4

I think I might send it back to Amazon.com for a replacement and see how the new copy works! :D


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justinp85
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Jan 16, 2011 18:16 |  #5

are u talking about your new sigma?


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hieu1004
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Jan 16, 2011 18:43 |  #6

I would MA mine and have done so in the past which fixed any front/back focus I had.


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dancing4raiin
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Jan 16, 2011 20:02 |  #7

whats MA? how often should you have a lens re calibrated?




  
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danny819
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Jan 17, 2011 02:14 |  #8

MA is microadjust. It is a feature on most of the newer bodies that allows you to adjust any minor focusing issues.


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koden
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Jan 17, 2011 09:25 |  #9

MA may not fix front/back focus issues across the entire zoom range. If you have a zoom lens that front/back focuses a different % at different zoom values the MA will only solve one of those points. When you send it to to be calibrated I believe canon can handle that issue better than a single MA value.

If you have a prime lens then MA should be all that is needed.




  
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Mark-B
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Jan 17, 2011 09:52 |  #10

koden wrote in post #11657915 (external link)
MA may not fix front/back focus issues across the entire zoom range. If you have a zoom lens that front/back focuses a different % at different zoom values the MA will only solve one of those points.

Same on a prime lens. I noticed that micro adjusting one of my primes made it look better at minimum focus distance (where I performed the adjustment), but made it look worse at infinity.


Mark-B
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EL_PIC
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Jan 17, 2011 10:09 |  #11
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MA is mostly scam.
Althought it may help if you shoot bird feathers at long FL and at wide F Stop it does not help much at real world photo in real world conditions at real world times.
Lenes and cameras should focus proper out of the box.
Canon marketing came up with MA when they had all those MK III issues to put heat on consumer.
Since the 90's almost all photo manufacturing has gone to non stop methods and the in line QC stops were taken away so they could reduce costs.
It is the manufactures responsibility to get it right !!


EL_PIC - RIT BS Photo '78 - Photomask Engineering Mgr
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CheshireCat
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Jan 17, 2011 17:43 |  #12

EL_PIC wrote in post #11658183 (external link)
MA is mostly scam.

+1
Get your lens replaced or calibrated.


1Dx, 5D2 and some lenses

  
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m.shalaby
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Jan 17, 2011 17:47 as a reply to  @ CheshireCat's post |  #13

I had a Canon lense calibrated and it back focused even more than before.

MA is a better solution if its a simple back focus / front focus issue.

EDIT: i didn't bring my body in (stupid me, i know) so thats probably the reason why it didn't work for me. MA took care of it.




  
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HungV
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Jan 17, 2011 17:51 |  #14

EL_PIC wrote in post #11658183 (external link)
MA is mostly scam.
Lenes and cameras should focus proper out of the box.
Canon marketing came up with MA when they had all those MK III issues to put heat on consumer.
It is the manufactures responsibility to get it right !!

Agreed.


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Andrew_WOT
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Jan 17, 2011 17:51 |  #15

EL_PIC wrote in post #11658183 (external link)
MA is mostly scam.
Althought it may help if you shoot bird feathers at long FL and at wide F Stop it does not help much at real world photo in real world conditions at real world times.
Lenes and cameras should focus proper out of the box.
Canon marketing came up with MA when they had all those MK III issues to put heat on consumer.
Since the 90's almost all photo manufacturing has gone to non stop methods and the in line QC stops were taken away so they could reduce costs.
It is the manufactures responsibility to get it right !!

And from my experience is pretty useless on zooms, you adjust short end and long one shifts and vice versa, makes AF even worse, have it recalibrated.




  
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MA vs Recalibrated
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